- A
BLEU score
Why wrong: BLEU measures n-gram overlap with reference code, which can be high even for incorrect code.
- B
Perplexity
Why wrong: Perplexity measures language model confidence, not code correctness.
- C
Pass@k (execution success rate)
Pass@k runs the generated code against test cases, directly measuring functional correctness.
- D
Exact match accuracy
Why wrong: Exact match is too strict and does not account for alternative correct implementations.
Question 640 of 1,000
AI0-001 Implementing AI Solutions Practice Question
This AI0-001 practice question tests your understanding of implementing ai solutions. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A team is evaluating a fine-tuned LLM for a code generation task. They notice the model rarely generates correct syntax but often produces plausible-looking code. Which evaluation metric is MOST appropriate to quantify this issue?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Pass@k (execution success rate)
Pass@k measures the probability that at least one of k generated code samples passes a set of unit tests, directly quantifying execution correctness. Since the model produces plausible-looking but syntactically incorrect code, execution success rate (Pass@k) is the most appropriate metric to capture whether the code actually runs correctly, unlike surface-level similarity metrics.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
BLEU score
Why it's wrong here
BLEU measures n-gram overlap with reference code, which can be high even for incorrect code.
- ✗
Perplexity
Why it's wrong here
Perplexity measures language model confidence, not code correctness.
- ✓
Pass@k (execution success rate)
Why this is correct
Pass@k runs the generated code against test cases, directly measuring functional correctness.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Exact match accuracy
Why it's wrong here
Exact match is too strict and does not account for alternative correct implementations.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that BLEU or exact match are sufficient for code generation evaluation, but the trap here is that plausible-looking code can score high on n-gram overlap while being syntactically or semantically invalid, making execution-based metrics like Pass@k the only reliable measure of functional correctness.
Detailed technical explanation
How to think about this question
Pass@k is computed by generating k candidate programs per problem, running them against hidden test cases, and calculating the fraction of problems where at least one candidate passes all tests. This metric is robust to syntactic variations because it evaluates functional equivalence through execution, not string matching. In practice, models like Codex and AlphaCode use Pass@k with k=100 or more to account for sampling diversity and to mitigate the sparsity of correct solutions in large output spaces.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the AI0-001 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this AI0-001 question test?
Implementing AI Solutions — This question tests Implementing AI Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Pass@k (execution success rate) — Pass@k measures the probability that at least one of k generated code samples passes a set of unit tests, directly quantifying execution correctness. Since the model produces plausible-looking but syntactically incorrect code, execution success rate (Pass@k) is the most appropriate metric to capture whether the code actually runs correctly, unlike surface-level similarity metrics.
What should I do if I get this AI0-001 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jul 4, 2026
This AI0-001 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AI0-001 exam.
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